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assign.go
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Editing: assign.go
// Copyright 2013 The Go Authors. All rights reserved. // Use of this source code is governed by a BSD-style // license that can be found in the LICENSE file. // This file contains tests for the useless-assignment checker. package assign import "math/rand" type ST struct { x int l []int } func (s *ST) SetX(x int, ch chan int) { // Accidental self-assignment; it should be "s.x = x" x = x // ERROR "self-assignment of x to x" // Another mistake s.x = s.x // ERROR "self-assignment of s.x to s.x" s.l[0] = s.l[0] // ERROR "self-assignment of s.l.0. to s.l.0." // Bail on any potential side effects to avoid false positives s.l[num()] = s.l[num()] rng := rand.New(rand.NewSource(0)) s.l[rng.Intn(len(s.l))] = s.l[rng.Intn(len(s.l))] s.l[<-ch] = s.l[<-ch] } func num() int { return 2 }
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